【单选题】【消耗次数：1】
验算天然地基在地震作用下的竖向承载力时，按地震作用效应标准组合考虑，下述表述中（）是不正确的。
①
基础底面平均压力不应大于调整后的地基抗震承载力
②
基础底面边缘最大压力不应大于调整后的地基抗震承载力的1.2倍
③
高宽比大于4的高层建筑，在地震作用下基础底面不宜出现拉应力
④
高宽比不大于4的高层建筑及其他建筑，基础底面与地基土之间零应力区面积不应超过基础底面积的25%
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